In this book, researchers give the floor to people of minorities in the world who, through their music, express their will to assert their identity. Musicians often champion a discourse that is both nostalgic and affirmative of a difference. How to promote these differences? We see it through the provocative broadcasting of erotic songs from Okinawa in a conservative Japan or through the success of a North Korean band immigrated with unheard of neo-political repertoire. Some 15 papers from recognized researchers coming from 14 different countries put forth situations observed and analyzed on about 20 meaningful cases and fieldworks in the world.